[Autumn]

I mean, you're not wrong, Performer is certainly the underperforming little cousin of the other two subclasses, and has the least healing (but comes with a powerful status cure)

I think most of the issues with Performer is that the base bard songs aren't amazing by any means and only provide stats instead of actual unique benefits. A stat buffer does not entail good utility in a fight, so Performer mostly relies upon some mediocre options in general. I'd like the base bard songs to get reworked to be more cohesive with eachother, and to be enhanced by Performer's individual passives, and then see where performer stands from there.

Just pulling an immediate example of the degree of which I think they should be changed:

Aria Of Agility: 

-Grants LV 2/2/3/3/4 Shukuchi to all allies in range until their next turn, as well as +5 Hit and Evade

Singing Effect: Grants the Aria of Agility aura which grants +5 Hit and +5 Evade

Amplified Agility: Shukuchi LV and hit/evade effects are increased by 50%

Expected to grant: 6 Movement similar to charge order, +15 Hit/Evade for 3 rounds.

I don't expect exactly this, but having the base bard songs be something a little better than just raw stats that get diminished at end game is more preferable than something that can only excel before level 60.